X-heads enough for 408 stroker?

Been checking threads on SB stroker builds which usually have aluminum heads. I have a bare 69 340 block 30 over and picked up a fresh set of stock 2.02 X-heads a while back cheap.

Planning for a future build down the road. Not sure I really need a 408 but since I will evently have to buy a rotating assy - why not.

Wondering how much work would be needed to flow sufficiently to make a 408 stroker worth it? Not a high build strip motor but a street combo 727 AT w/ 2500-2800 stall and 3.55-3.73.

Inputs please - thanks